We have searched for the C-violating decay η→γγγ in a sample of ∼18 million η mesons produced in φ→ηγ decays, collected with the KLOE detector at the Frascati φ-factory DAΦNE. No signal is observed and we obtain the upper limit BR(η→γγγ)≤1.6×10-5 at 90% CL.
Upper limit on the η → γγγ branching ratio with the KLOE detector
ERRIQUEZ, Onofrio
2004-01-01
Abstract
We have searched for the C-violating decay η→γγγ in a sample of ∼18 million η mesons produced in φ→ηγ decays, collected with the KLOE detector at the Frascati φ-factory DAΦNE. No signal is observed and we obtain the upper limit BR(η→γγγ)≤1.6×10-5 at 90% CL.File in questo prodotto:
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